Get magento default session messages

Hi friends, I spend much time on this , You can render magento default session message.You can also render these  message and call them by Ajax.

<?php 

 /*Brings checkout sessions message*/

$messages=Mage::getSingleton("checkout/session")->getMessages();

 /*Get layout and render default message*/

echo this->getLayout()->createBlock("core/messages")->setMessages($messages)->getGroupedHtml();

Note: If you want another session's message then  modify your Singleton:

$messages=Mage::getSingleton("customer/session")->getMessages();
or
$messages=Mage::getSingleton("core/session")->getMessages();
or
$messages=Mage::getSingleton("checkout/session")->getMessages();
?>

All done Enjoy!! =========